RockyTweaks
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Information
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Rocky Tweaks (formerly known as Rocky Core) adds the ability to tweak the Vanilla Anvil and Merchant (Villager) trades using CraftTweaker.
For More Information
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Project Page: https://minecraft.curseforge.com/projects/rocky-tweaks
Bug Reports
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Issue Tracker: https://github.com/DevOnTheRocks/RockyTweaks/issues